Invention Grant
- Patent Title: Automatic transmission having torque converter bypass
- Patent Title (中): 自动变速器具有变矩器旁路
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Application No.: US13095986Application Date: 2011-04-28
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Publication No.: US08388479B2Publication Date: 2013-03-05
- Inventor: Andrew W. Phillips , Donald L. Dusenberry
- Applicant: Andrew W. Phillips , Donald L. Dusenberry
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F16H47/08
- IPC: F16H47/08

Abstract:
An automatic transmission having an improved lock up torque converter configuration includes two drive members: a first quill or tubular drive member which carries the output of the torque converter to the transmission gearbox and a second co-axial shaft or drive member which is driven by the torque converter lockup clutch and thus directly carries the engine output to the transmission gear box and bypasses the torque converter. The transmission gearbox includes two planetary gear assemblies having certain elements which are selectively grounded to the transmission housing by two friction brakes. This transmission, torque converter and torque converter clutch configuration prevents torque converter clutch engagement in its lower gear and forces torque converter clutch lockup in its upper gear.
Public/Granted literature
- US20120277049A1 AUTOMATIC TRANSMISSION HAVING TORQUE CONVERTER BYPASS Public/Granted day:2012-11-01
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